<template>
  <div>
    <el-card>
      <!-- 提示 -->
      <el-alert title="添加商品信息" type="info" show-icon center :closable="false"></el-alert>
      <!-- 步骤 -->
      <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <!-- 表单 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <!-- tab -->
        <el-tabs
          tab-position="left"
          v-model="activeIndex"
          :before-leave="handleBeforeLeave"
          @tab-click="clickTabs"
        >
          <el-tab-pane label="基本信息">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="propsConfig"
                @change="handleChange"
                expand-trigger="hover"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数">
            <el-form-item v-for="item in manyTableData" :key="item.attr_id" :label="item.attr_name">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox border :label="item2" v-for="item2 in item.attr_vals" :key="item2"></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性">
            <el-form-item v-for="item in onlyTableData" :key="item.attr_id" :label="item.attr_name">
              <el-checkbox-group v-model="item.attr_vals">
                <el-input v-model="item.attr_vals"></el-input>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片">
            <el-upload
              action="http://47.106.229.162:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              list-type="picture"
              :headers="headersObj"
              :on-success="handleSuccess"
              :on-remove="handleRemove"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容">
            <quill-editor v-model="addForm.goods_introduce"></quill-editor>
            <el-button type="primary" style="margin-top: 15px;" @click="handleAddPost">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <!-- 对话框 -->

    <el-dialog title="预览" :visible.sync="previewVisible" width="50%" class="preview">
      <img :src="previewPath" alt />
    </el-dialog>
  </div>
</template>

<script>
// import _ from 'lodash'
export default {
  data() {
    return {
      propsConfig: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      activeIndex: '0',
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cate: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      manyTableData: [],
      onlyTableData: [],
      headersObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewPath: '',
      previewVisible: false
    }
  },

  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.$message.success(res.meta.msg)
      this.cateList = res.data
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) this.addForm.goods_cat = []
      console.log(this.addForm.goods_cat)
    },
    handleBeforeLeave(activeName, oldName) {
      //   console.log('activeName:', activeName)
      //   console.log('oldName:', oldName)
      if (this.addForm.goods_cat.length !== 3 && oldName === '0') {
        this.$message.error('请先选择分类!')
        return false
      }
    },
    async clickTabs() {
      switch (this.activeIndex) {
        case '1': {
          const { data: res } = await this.$http.get(
            `categories/${this.cateId}/attributes`,
            {
              params: { sel: 'many' }
            }
          )
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          res.data.forEach(item => {
            item.attr_vals =
              item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
          })
          this.manyTableData = res.data
          console.log(res)
          break
        }
        case '2': {
          const { data: res } = await this.$http.get(
            `categories/${this.cateId}/attributes`,
            {
              params: { sel: 'only' }
            }
          )
          if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
          this.$message.success(res.meta.msg)
          //   res.data.forEach(item => {
          //     item.attr_vals =
          //       item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
          //   })
          this.onlyTableData = res.data
          console.log(res)
          break
        }
      }
    },
    handlePreview(file) {
      this.previewPath =
        'http://47.106.229.162:8888/' + file.response.data.tmp_path
      console.log(this.previewPath)

      this.previewVisible = true
    },
    handleRemove(file) {
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(item => item.pic === filePath)
      this.addForm.pics.splice(i, 1)
    },
    handleSuccess(res) {
      const pic = { pic: res.data.tmp_path }
      this.addForm.pics.push(pic)
      console.log(this.addForm.pics)
    },
    handleAddPost() {
      this.$refs.addFormRef.validate(async vali => {
        if (!vali) return this.$message.error('请检验通过所填项!')
        // 数据处理 深拷贝
        // const from = _.cloneDeep(this.addForm) //lodash方法
        let form = JSON.parse(JSON.stringify(this.addForm))
        form.goods_cat = form.goods_cat.join(',')
        this.manyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(' ')
          }
          form.attrs.push(newInfo)
        })
        this.onlyTableData.forEach(item => {
          const newInfo = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          form.attrs.push(newInfo)
        })
        console.log(form)
        const { data: res } = await this.$http.post('goods', form)
        if (res.meta.status !== 201) return this.$message.error(res.meta.msg)
        this.$message.success(res.meta.msg)
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  },
  created() {
    this.getCateList()
  }
}
</script>
<style lang='less' scoped>
.el-checkbox {
  margin: 0 10px 0 0 !important;
}
.preview {
  img {
    width: 100%;
  }
}
</style>